condition	mean	min	max
4 h after light	17.97325	15.3372	20.6093
8 h after light	17.2732	16.5919	17.9545
12 h after light	13.9922	12.5799	15.4045
4 h after dark	18.157600000000002	16.4782	19.837
8 h after dark	16.4924	15.9438	17.041
12 h after dark	19.504350000000002	17.8715	21.1372